I'll second that.
In the school district where I work, we bought some HP tx1000 tablets for the math department. After a few weeks, they refused to use them, and we had to replace them with Gateway TA-6 and TA-7s.
The biggest difference I found was that the tx1000 series laptops don't have the same touch screen as a tablet. The screen works similarly to a Palm touchscreen (the stylus is simply a piece of plastic, and you can interact with the touchscreen using your fingers.) However, I found the screen is highly inaccurate, and loses calibration faster than an old cheap joystick. After the screen broke and I had it replaced, the touchscreen won't even calibrate at all - it thinks it's a couple inches to the right or something.
Our math teachers use Gateway tablets and they're satisfied - the Gateways are more solid, the hinge is better, and the Wacom touchscreens are orders of magnitude better than the shoddy HP trash.
However, the silver lining is that the HP tablet is small and light - the screen is about the size of a US letter sheet of paper, and the machine is lighter than the Gateway tablets we have. Of course, that doesn't really mean anything if the touchscreen doesn't live up.
Oh yeah, and my experience with HP tech support... well, it left a lot to be desired. As in, I desired that I'd bought a Dell. Or had splinters driven under my fingernails.
So, I can't really tell you what to buy, but I can tell you what *not* to buy. Don't buy HP. The last decent product they made was the 48GX. Everything after that's been crap, IMHO.